CN212775397U - Light differential cycloid speed variator - Google Patents
Light differential cycloid speed variator Download PDFInfo
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- CN212775397U CN212775397U CN202021305007.1U CN202021305007U CN212775397U CN 212775397 U CN212775397 U CN 212775397U CN 202021305007 U CN202021305007 U CN 202021305007U CN 212775397 U CN212775397 U CN 212775397U
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Abstract
The utility model relates to the technical field of mechanical transmission, in particular to a light-weight differential cycloid speed change device, which comprises a machine body, an input shaft with an eccentric structure, a cycloid disc eccentrically driven by the input shaft and an output part linked with the cycloid disc, the machine body comprises a rear cover, the axial two end surfaces of the cycloid disc are respectively an A surface and a B surface, a plurality of first ball fixing holes and expanding holes which are distributed around the circumferential direction are arranged between the A surface of the cycloid disc and the rear cover, a cycloid groove and a plurality of second ball fixing holes distributed around the circumferential direction are arranged between the surface B of the cycloid disc and the opposite surface of the output part opposite to the surface B, the machine body also comprises an annular shell made of aluminum alloy material, the cycloid disc is positioned in the annular shell, the rear cover comprises a first abutting part made of steel and a first supporting part made of aluminum alloy, and the first ball fixing hole or the expanding hole is formed in the first abutting part. Light weight, few parts, small volume and reasonable layout.
Description
Technical Field
The utility model relates to a machinery rotates technical field, especially one kind to applying earlier "robot cycloid speed reducer and robot that does not have follow-up plate" carry out modified light-weight type differential cycloid speed change gear.
Background
In a prior application of the present applicant, the application No. 201710801363.9 discloses a robot cycloid speed reducer without follower plates and a robot, comprising: a rear cover plate; the end surface of the eccentric wheel is provided with a plurality of ball arc cavities; a plurality of balls; a plurality of uniformly distributed annular arc grooves are concentrically and circumferentially formed in the end face of the rear cover plate, the balls are embedded between the annular arc grooves and the ball arc cavities of the eccentric wheel, and the eccentric wheel can eccentrically rotate relative to the rear cover plate. In the structure, the main parts are all made of steel, the weight is heavy, the required driving force is large during use, the weight of the whole device is large, and the carrying and the application are not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a light-weight differential cycloid speed change gear with few parts and small volume.
In order to realize the purpose, the utility model discloses a technical scheme is: a light-weight differential cycloid speed change device comprises a machine body, an input shaft with an eccentric structure, a cycloid disc eccentrically driven by the input shaft and an output part linked with the cycloid disc, wherein the machine body comprises a rear cover, the axial two end faces of the cycloid disc are respectively an A face and a B face, a plurality of first ball fixing holes and a plurality of expanding holes which are distributed in the circumferential direction are arranged between the A face and the rear cover of the cycloid disc, the first ball fixing holes and the expanding holes are in one-to-one correspondence, a cycloid groove and a plurality of second ball fixing holes which are distributed in the circumferential direction are arranged between the B face and the opposite face of the output part opposite to the B face of the cycloid disc, a first ball and a second ball which enable the cycloid disc to do cycloid movement are respectively arranged between the first ball fixing hole and the expanding holes and between the second ball fixing hole and the cycloid groove, and the machine body further comprises an annular shell made of aluminum alloy material, this annular shell passes through bolted connection with the back lid, the cycloid dish is located annular shell, the back lid includes the first butt portion of being made by steel and the first supporting part of being made by the aluminum alloy, first butt portion and first supporting part fixed connection, first ball fixed orifices or enlarged footing hole set up on first butt portion.
Among the above-mentioned technical scheme, speed change device mainly only has three part, the organism, all through ball transmission between cycloid dish and the output, the part is few, simple to operate, whole size attenuation, the bore of enlarged footing is greater than the ball diameter of first ball, the setting of enlarged footing is exactly for providing the skew space for the cycloid dish, make the cycloid dish can be the cycloid motion, there is the clearance between the outer side global of cycloid dish and the inner wall of annular shell, avoid the cycloid dish to collide the inner wall of annular shell when doing the cycloid motion, the back is covered and is had two parts to constitute, first supporting part adopts the aluminum alloy that the quality is lighter, first butt portion is because of contacting with first ball, so adopt the harder steel of intensity, input shaft and annular shell also adopt the aluminum alloy, can make stable in structure, increase of service life, can be applied to the less application scenario of drive power again, the overall arrangement is reasonable.
As a further setting of the utility model, the output portion includes the second butt portion made by steel and the second supporting part made by the aluminum alloy, second butt portion and second supporting part fixed connection, second ball fixed orifices or cycloid groove set up on second butt portion.
Among the above-mentioned technical scheme, output portion has two parts to constitute, and the second supporting part adopts the aluminium alloy that the quality is lighter, and the second butt portion is because of contacting with the second ball, so adopt the harder steel of intensity, can make stable in structure, increase of service life can be applied to the less application scenario of drive power again, and is rationally distributed.
As a further arrangement of the present invention, the first abutting portion and the first supporting portion are fixed by inserting, and the second abutting portion and the second supporting portion are fixed by inserting.
Among the above-mentioned technical scheme, first butt portion and first supporting part are pegged graft along the axial and are set up the spacing cooperation that constitutes circumference, prevent first butt portion and first supporting part mutual rotation, second butt portion and second supporting part are also along the axial and peg graft the spacing cooperation that sets up constitution circumference, prevent second butt portion and second supporting part mutual rotation, first butt portion and first supporting part and second butt portion and second supporting part are spacing through the complete machine in the axial, each part is the butt each other in the axial constitutes the location promptly, moreover, the steam generator is simple in structure, and is convenient to install.
As a further setting of the utility model, be provided with the first inserted block and the first slot of pegging graft each other between first butt portion and the first supporting part.
Among the above-mentioned technical scheme, first butt portion circularizes, be provided with on the first supporting part and supply first butt portion to inlay the ring channel of establishing, preferred first inserted block sets up the tip at first butt portion, first slot sets up on the bottom surface of ring channel, the position interchange also can of first inserted block and first slot, first butt portion inlays to establish back in the ring channel, first inserted block on it inserts first slot and realizes the cooperation of pegging graft, first inserted block and first slot of here are the tight fit, first butt portion can the snap-on first supporting part like this, moreover, the steam generator is simple in structure, high durability and convenient manufacture, firm in connection.
As a further setting of the utility model, be provided with second inserted block and the second slot of pegging graft each other between second butt portion and the second supporting part.
Among the above-mentioned technical scheme, preferred second inserted block sets up on the second supporting part, and the second slot sets up on second butt portion, otherwise also can, when second butt portion and second supporting part superpose, the second inserted block inserts the second slot and realizes the cooperation of pegging graft, and second inserted block and second slot here are the tight fit, and second butt portion can be relatively fixed with the second supporting part like this, simple structure, and processing is convenient, firm in connection.
As a further setting of the utility model, be provided with cross roller bearing between output and the annular shell, all be provided with deep groove ball bearing between back lid, cycloid dish, output and the input shaft.
In the technical scheme, the standardized components are used for replacing non-standardized components, so that the cost is reduced, and the installation efficiency is improved.
As a further setting of the utility model, cross roller bearing is located between second supporting part and the annular shell, and deep groove ball bearing between output and the input shaft is located between second butt portion and the input shaft, the one end threaded connection relative with the back lid on the annular shell has adjusting nut, and this adjusting nut supports and presses on cross roller bearing.
Among the above-mentioned technical scheme, adjusting nut is the annularity, and with annular shell screw-thread fit for eliminate the axial clearance, the setting of cross roller bearing and deep groove ball bearing all is in order to reduce rotational friction, reduces the running noise, increase of service life.
As a further configuration of the present invention, the bottom surface of the enlarged hole is a central convex annular arc groove, and the first ball can roll in the annular arc groove.
Among the above-mentioned technical scheme, the bottom surface of enlarged hole also can be planar, and the preferred annular circular arc groove that is, the bottom of annular circular arc groove is convex, has avoided the stress concentration phenomenon of sword point form, has strengthened the intensity of back lid or cycloid dish, and annular circular arc groove is radial not break through, has further strengthened the intensity of back lid or cycloid dish, and the centre of a circle of each annular circular arc groove encloses into a circle.
As a further setting of the utility model, the axial cross-section of annular arc groove has two arc grooves, and the radius of this arc groove is unanimous with the radius of first ball, perpendicular distance between the center of two arc grooves equals the twice of input shaft offset.
Among the above-mentioned technical scheme, when first ball was located annular arc groove, the distance between the central line of annular arc groove to the first ball centre of sphere was the eccentric volume of input shaft, and first ball is rolling motion at annular arc inslot for the friction is little, and the noise is little, and the loss of use is low, the life-span increase, and power consumption is few, sparingly drives the electric energy.
As a further arrangement of the utility model, the annular shell and the input shaft are made of aluminum alloy material.
Among the above-mentioned technical scheme, reduce weight, alleviate the load, be convenient for drive, the range of application is wide.
The present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a sectional view of the overall structure of the embodiment of the present invention;
FIG. 2 is a sectional view of the overall structure of the embodiment of the present invention;
FIG. 3 is an exploded view of the structure of the embodiment of the present invention;
FIG. 4 is an exploded view of the structure of the embodiment of the present invention;
FIG. 5 is an exploded view of the rear cover according to the embodiment of the present invention;
FIG. 6 is an exploded view of the rear cover according to the embodiment of the present invention;
FIG. 7 is an exploded view of the output section of the embodiment of the present invention;
FIG. 8 is an exploded view of the output section of the embodiment of the present invention;
FIG. 9 is a sectional view of the rear cover according to the embodiment of the present invention;
fig. 10 is a partial enlarged view a of fig. 9.
Detailed Description
The specific embodiment of the utility model is shown in fig. 1-10, a light-weight differential cycloid speed change device, including organism 1, input shaft 2 that has eccentric structure, receive input shaft 2 eccentric drive's cycloid dish 3 and with cycloid dish 3 linkage output 4, organism 1 includes back lid 11, cycloid dish 3's axial both ends face is A face 31 and B face 32 respectively, be provided with a plurality of first ball fixed orifices 311 and the enlarged footing 111 that distribute around circumference between A face 31 and the back lid 11 of cycloid dish 3, first ball fixed orifices 311 and enlarged footing 111 one-to-one, be provided with cycloid groove 321 and a plurality of second ball fixed orifices 41 that distribute around circumference on B face 32 and the output 4 of cycloid dish 3 between the opposite face relative with B face 32, be provided with first ball 5 and second ball 6 that make cycloid move of cycloid dish 3 between first ball fixed orifices 311 and the enlarged footing 111 and between second ball fixed orifices 41 and the cycloid groove 321 respectively The machine body 1 further comprises an annular outer shell 12 made of an aluminum alloy material, the annular outer shell 12 is connected with the rear cover 11 through screws, the cycloid disc 3 is located in the annular outer shell 12, the rear cover 11 comprises a first abutting part 112 made of steel and a first supporting part 113 made of an aluminum alloy, the first abutting part 112 is fixedly connected with the first supporting part 113, and the first ball fixing hole 311 or the expanding hole 111 is arranged on the first abutting part 112.
The speed change device mainly comprises three parts, the machine body 1, the cycloid disc 3 and the output part 4 are all in ball transmission, the number of the parts is small, the installation is convenient, the overall size is thinned, the caliber of the expanding hole 111 is larger than the ball diameter of the first ball 5, the expanding hole 111 is arranged to provide an offset space for the cycloid disc 3, the cycloid disc 3 can move in a cycloid manner, a gap exists between the outer peripheral surface of the cycloid disc 3 and the inner wall of the annular shell 12, the cycloid disc 3 is prevented from colliding the inner wall of the annular shell 12 when in cycloid movement, the rear cover 11 is composed of two parts, the first supporting part 113 is made of aluminum alloy with light weight, the first abutting part 112 is in contact with the first ball 5, steel with hard strength is adopted, the input shaft 2 and the annular shell 12 are also made of aluminum alloy, the structure is stable, the service life is prolonged, and the speed change device can be applied to, the layout is reasonable.
The output part 4 includes a second contact part 42 made of steel and a second support part 43 made of aluminum alloy, the second contact part 42 and the second support part 43 are fixedly connected, and the second ball fixing hole 41 or the cycloid groove 321 is provided in the second contact part 42. The output part 4 is composed of two parts, the second supporting part 43 is made of aluminum alloy with lighter weight, and the second abutting part 42 is made of steel with harder strength due to the contact with the second ball 6, so that the structure is stable, the service life is prolonged, the output part can be applied to the application occasion with smaller driving force, and the layout is reasonable.
The first contact portion 112 and the first support portion 113 are fixed by insertion, and the second contact portion 42 and the second support portion 43 are fixed by insertion. The first abutting part 112 and the first supporting part 113 are arranged in an inserting mode along the axial direction to form circumferential limit fit, the first abutting part 112 and the first supporting part 113 are prevented from rotating mutually, the second abutting part 42 and the second supporting part 43 are also arranged in an inserting mode along the axial direction to form circumferential limit fit, the second abutting part 42 and the second supporting part 43 are prevented from rotating mutually, the first abutting part 112, the first supporting part 113, the second abutting part 42 and the second supporting part 43 are limited in the axial direction through the whole machine, namely, all parts are abutted mutually in the axial direction to form positioning, the structure is simple, and the installation is convenient.
A first insertion block 1121 and a first insertion groove 1131 are disposed between the first abutting portion 112 and the first supporting portion 113. First butt portion 112 is annular, be provided with the ring channel 1132 that supplies first butt portion 112 to inlay on the first supporting portion 113, preferred first inserted block 1121 sets up the tip at first butt portion 112, first slot 1131 sets up on the bottom surface of ring channel 1132, the position of first inserted block 1121 and first slot 1131 is interchangeable also, first butt portion 112 inlays the back of establishing in ring channel 1132, first inserted block 1121 on it inserts first slot 1131 and realizes the grafting cooperation, first inserted block 1121 and first slot 1131 of here are the tight fit, first butt portion 112 can directly be fixed on first supporting portion 113 like this, moreover, the steam generator is simple in structure, and processing is convenient, and firm in connection.
A second insertion block 431 and a second insertion groove 421 which are inserted into each other are provided between the second abutting portion 42 and the second supporting portion 43.
Preferably, the second insertion block 431 is disposed on the second supporting portion 43, and the second insertion slot 421 is disposed on the second abutting portion 42, or vice versa, when the second abutting portion 42 and the second supporting portion 43 are overlapped, the second insertion block 431 is inserted into the second insertion slot 421 to realize insertion fit, and the second insertion block 431 and the second insertion slot 421 are tightly fitted, so that the second abutting portion 42 and the second supporting portion 43 can be relatively fixed, and the structure is simple, the processing is convenient, and the connection is firm.
A cross roller bearing 01 is arranged between the output part 4 and the annular shell 12, and deep groove ball bearings 02 are arranged between the rear cover 11, the cycloid disc 3, the output part 4 and the input shaft 2. And the standardized components are used for replacing non-standardized components, so that the cost is reduced, and the installation efficiency is improved.
The cross roller bearing 01 is positioned between the second support part 43 and the annular housing 12, the deep groove ball bearing 02 between the output part 4 and the input shaft 2 is positioned between the second contact part 42 and the input shaft 2, an adjusting nut 7 is screwed to one end of the annular housing 12 opposite to the rear cover 11, and the adjusting nut 7 is pressed against the cross roller bearing 01. The adjusting nut 7 is annular and is in threaded fit with the annular shell 12 and used for eliminating axial clearance, and the arrangement of the crossed roller bearing 01 and the deep groove ball bearing 02 is used for reducing rotation friction, reducing operation noise and prolonging service life.
The bottom surface of the enlarged hole 111 is an annular arc groove 1112 of a central protrusion 1111, the height of the central protrusion 1111 is small, the end surface thereof may be planar or pointed, the inner wall of the annular arc groove 1112 is attached to the first ball 5, and the first ball 5 may roll in the annular arc groove 1112. The bottom surface of the enlarged hole 111 may also be planar, preferably, the annular arc groove 1112, and the bottom of the annular arc groove is arc-shaped, so as to avoid the phenomenon of stress concentration in the shape of a knife tip, enhance the strength of the rear cover 11 or the cycloid disc 3, and the annular arc groove is not penetrated in the radial direction, further enhance the strength of the rear cover 11 or the cycloid disc 3, and the center of each annular arc groove 1112 encloses a circle.
The annular circular arc groove 1112 has two circular arc grooves 1112a in an axial cross section, the radius of the circular arc grooves 1112a is equal to the radius of the first ball 5, and the perpendicular distance between the centers of the circular arc grooves 1112a is equal to twice the eccentric amount r of the input shaft 2. When the first ball 5 is located in the circular arc groove 1112, the distance between the center line of the circular arc groove 1112 and the center of the first ball 5 is the eccentric amount r of the input shaft 2, and the first ball 5 rolls in the circular arc groove 1112, so that the friction is small, the noise is small, the service loss is low, the service life is prolonged, the power consumption is low, and the driving electric energy is saved.
The annular housing 12 and the input shaft 2 are made of an aluminum alloy material. The weight is reduced, the load is lightened, the driving is convenient, and the application range is wide.
The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.
Claims (10)
1. The utility model provides a light-weight type differential cycloid speed change device, includes organism, the input shaft that has eccentric structure, receives input shaft eccentric drive's cycloid dish and the output portion that links with the cycloid dish, the organism includes the back lid, the axial both ends face of cycloid dish is A face and B face respectively, be provided with a plurality of first ball fixed orifices and the enlarged footing hole around circumference distribution between the A face of cycloid dish and the back lid, first ball fixed orifices and enlarged footing hole one-to-one, be provided with the cycloid groove on the B face of cycloid dish and the output portion between the opposite face relative with the B face and wind a plurality of second ball fixed orifices that circumference distributes, be provided with respectively between first ball fixed orifices and the enlarged footing hole and between second ball fixed orifices and the cycloid groove and make the cycloid dish do cycloid motion's first ball and second ball, its characterized in that: the organism still includes the annular shell of being made by aluminium alloy material, and this annular shell passes through bolted connection with the hou gai, the cycloid dish is located the annular shell, the back lid includes the first butt portion of being made by steel and the first supporting part of being made by the aluminum alloy, first butt portion and first supporting part fixed connection, first ball fixed orifices or enlarged footing hole set up on first butt portion.
2. A lightweight differential cycloidal transmission according to claim 1 including: the output part comprises a second abutting part made of steel and a second supporting part made of aluminum alloy, the second abutting part and the second supporting part are fixedly connected, and the second ball fixing hole or the cycloid groove is formed in the second abutting part.
3. A lightweight differential cycloidal transmission according to claim 2 including: the first abutting part and the first supporting part are fixed in an inserting mode, and the second abutting part and the second supporting part are fixed in an inserting mode.
4. A lightweight differential cycloidal transmission according to claim 1, 2 or 3 including: a first inserting block and a first inserting groove which are mutually inserted are arranged between the first abutting portion and the first supporting portion.
5. A lightweight differential cycloidal transmission according to claim 2 or 3 including: and a second inserting block and a second inserting groove which are mutually inserted are arranged between the second abutting part and the second supporting part.
6. A lightweight differential cycloidal transmission according to claim 1, 2 or 3 including: and a cross roller bearing is arranged between the output part and the annular shell, and deep groove ball bearings are arranged among the rear cover, the cycloid disc, the output part and the input shaft.
7. A lightweight differential cycloidal transmission according to claim 6 including: the crossed roller bearing is positioned between the second supporting part and the annular shell, the deep groove ball bearing between the output part and the input shaft is positioned between the second abutting part and the input shaft, and one end of the annular shell, which is opposite to the rear cover, is in threaded connection with an adjusting nut which is pressed against the crossed roller bearing.
8. A lightweight differential cycloidal transmission according to claim 1, 2, 3 or 7 including: the bottom surface of the enlarged hole is an annular arc groove with a convex center, and the first ball can roll in the annular arc groove.
9. A lightweight differential cycloidal transmission according to claim 8 including: the axial section of the annular arc groove is provided with two arc grooves, the radius of the arc grooves is consistent with that of the first ball, and the vertical distance between the centers of the two arc grooves is equal to twice of the eccentric amount of the input shaft.
10. A lightweight differential cycloidal transmission according to claim 1, 2, 3, 7 or 9 and characterized in that: the annular shell and the input shaft are both made of aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305007.1U CN212775397U (en) | 2020-07-06 | 2020-07-06 | Light differential cycloid speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305007.1U CN212775397U (en) | 2020-07-06 | 2020-07-06 | Light differential cycloid speed variator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775397U true CN212775397U (en) | 2021-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021305007.1U Active CN212775397U (en) | 2020-07-06 | 2020-07-06 | Light differential cycloid speed variator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775397U (en) |
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2020
- 2020-07-06 CN CN202021305007.1U patent/CN212775397U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG UNIVERSE FILTER Co. Assignor: HSOAR GROUP Co.,Ltd. Contract record no.: X2021330000378 Denomination of utility model: Light weight differential cycloid speed change device Granted publication date: 20210323 License type: Common License Record date: 20211009 |
|
| EE01 | Entry into force of recordation of patent licensing contract |